Reti Opening

Reti Opening
The Réti Opening is a hypermodern chess opening whose traditional or classic method begins with the moves:
 * 1. Nf3 d5
 * 2. c4

White plans to bring the d5-pawn under attack from the flank, or entice it to advance to d4 and undermine it later. White will couple this plan with a kingside fianchetto (g3 and Bg2) to create pressure on the light squares in the center.

The opening is named after Richard Réti (1889–1929), an untitled Grandmaster from Czechoslovakia. The opening is in the spirit of thehypermodernism movement that Réti championed, with the center being dominated from the wings rather than by direct occupation.

1.Nf3 develops the knight to a good square, prepares for quick castling, and prevents Black from occupying the center by 1...e5. White maintains flexibility by not committing to a particular central pawn structure, while waiting to see what Black will do. But the Réti should not be thought of as a single opening sequence, and certainly not a single opening move, but rather as an opening complex with many variations sharing common themes.

In the Encyclopaedia of Chess Openings (ECO), Réti Opening is classified as codes A04–A09.